Track routes and track priority with VRRP-E

Route tracking allows networks not configured for VRRP extended (VRRP-E) to be monitored for network reachability changes that can result in dynamic changes to the VRRP-E device priority.

Using network addresses, routes are tracked for online or offline events. The networks to be tracked can be either present or absent from the Routing Information Base (RIB). When route-tracking is enabled in the configured VRRP-E instance, the status of the tracked route is monitored. The priority of the VRRP-E device may be changed dynamically due to the following events:

• When a tracked route goes into an offline state, the configured track priority is subtracted from the current value of the VRRP-E device.
• When a tracked route returns to an online state, the configured track priority is added to the current value of the VRRP-E device.

Note

Network tracking is not supported by VRRP; only VRRP-E supports network tracking.

The dynamic change of device priority can trigger a switchover from a master VRRP-E device to a backup VRRP-E device if preemption is enabled.

Forward referencing for tracked routes is supported. The tracked route can be removed and added without the need to reconfigure the tracking for the route.

Note

Maximum number of routes that can be tracked for a virtual VRRP-E device is 16.